Misted Up Units?


Here at APG we can combat misted windows by replacing the glass and install these professionally to  ensure they are properly sealed.

Reasons For Double Glazing Brake Down:

The weather is the main reason for a sealed unit to fail and you will probably find the units on the south facing side of your property will fail quicker.

When the units are exposed to High/Warm temperatures in the summer the air inside the unit expands and in the freezing cold winter months it contracts.

The stress this causes on the perimeter seal eventually causes the seal to break away from the glass (to fail).Once the seal has failed, moisture is drawn into the unit when the temperature drops and is expelled from the unit when the temperature rises. This eventually saturates the desiccant crystals inside the spacer bars and moisture condensing on the glass is visible.

Moisture/Humidity trapped in the unit turns into steam that rises to the top of the unit, as it gets cooler the steam condenses on the cooler glass surface (outer pane) and runs down the glass.other reasons maybe:

  • Incorrect fitting
  • Poor manufacturing
  • Blocked drainage system

Misted double glazing compromises the efficiency of the thermal performance of windows,  where the window has basically broken down, when ignored, can cause:

  • Heat to escape from the property
  • Your energy bills to rise
  • Mould to form

All of this can be a hazard to your health if damp and mould fill the air in the room, which is why it’s important to have this problem fixed as quickly and efficiently as possible.

Do not let failed units aggravate you, simply contact our dedicated team of experienced craftsmen who can supply and install new double glazing. Phone us to repair  or replace broken glass and failed double glazing in Derry City and  right across Ireland.

All Purpose Glazing located in Derry City, Northern Ireland we provide Quality assured assistance with glass and glazing across Ireland and the UK please Contact us today on 02871 357 444. -or-  E-mail us.